Count lines in a text without empty liines

Question

I'm using next code to count lines in a text i have. It's work fine but I don't want to count empty lines. How can I do it, but with saving the current code format?

var lineCount = 0;
using (var readerlines = File.OpenText(strfilename))
{
    while (readerlines.ReadLine() != null)
    {
        lineCount++;
    }
}

I suggest using LINQ and using `string.IsNullOrWhiteSpace`. – WGS Jan 21 '16 at 11:59 — WGS, Jan 21 '16 at 11:59

score 4 · Answer 1 · edited Jan 21 '16 at 12:04

4

You can try like this:

int lineCount = File.ReadLines(@"yourfile.txt")
                    .Count(line => !string.IsNullOrWhiteSpace(line));

edited Jan 21 '16 at 12:04

Tim Schmelter

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answered Jan 21 '16 at 11:58

Rahul Tripathi

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Guy · Accepted Answer · 2016-01-21T12:12:01.577

2

Check if the line is not an empty string

var lineCount = 0;
string line = string.Empty;
using (var readerlines = File.OpenText(strfilename))
{
    while ((line = readerlines.ReadLine()) != null)
    {
        if (!line.Equals(string.Empty))
        {
            lineCount++;
        }   
    }
}

edited Jan 21 '16 at 12:12

answered Jan 21 '16 at 11:59

Guy

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I got an error for the first example (on the word equals) and the second give me wrong line numbers (very low) – Coby Abutbul Jan 21 '16 at 12:10
@CobyAbutbul What is the error? – Guy Jan 21 '16 at 12:14
@CobyAbutbul nevermined, should be Equals with capital letter – Guy Jan 21 '16 at 12:15
It is working great. Thanks – Coby Abutbul Jan 21 '16 at 12:22

score 0 · Answer 3 · answered Jan 21 '16 at 12:03

Or this:

string data = File.ReadAllText(strfilename);
string[] lines = data.Split(new char[] {'\n' }, StringSplitOptions.RemoveEmptyEntries);
int line_count = lines.Length;

In short:

int line_count = File.ReadAllText(strfilename).Split(new char[] {'\n' }, StringSplitOptions.RemoveEmptyEntries).Length;

Count lines in a text without empty liines

3 Answers3